About Borides

Zirconium Boride

Borides are chemical compounds formed when boron bonds with a less electronegative element. Borides are all hard, high-melting-point materials with metal-like conductivity. They can be made by direct combination of the elements at high temperatures or, more usually, by high-temperature reduction of a mixture of the metal oxide and boron oxide using carbon or aluminium. Chemically, they are stable to non-oxidizing acids but are attacked by strong oxidizing agents and by strong alkalis. Borides can be classified loosely as boron-rich or metal-rich. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more the compound is boron-rich, if it is less, then it is metal-rich.

Boron-rich boride properties vary from one compound to the next, and include examples of compounds that are semiconductors, superconductors, diamagnetic, paramagnetic, ferromagnetic or anti-ferromagnetic. They are mostly stable and refractory. One such compound, lanthanum boride (LaB6), is an inert refractory compound, used in hot cathodes because of its low work function for emission of electrodes.

Borides formed with transition metals tend to form metal-rich borides. Metal-rich borides are typically inert and have high melting temperatures. Investigations into these borides have revealed a wealth of interesting properties such as superconductivity at 39 K in magnesium diboride (MgB2) and the ultra-incompressibility of OsB2 and ReB2.

Recent Research & Development for Borides

Synthesis of Metal Boride Nanoparticles Using Triple Thermal Plasma Jet System., Kim, Minseok, Oh Jeong-Hwan, Kim Tae-Hee, Lee Yong Hee, Hong Seung-Hyun, and Choi Sooseok , J Nanosci Nanotechnol, 2019 Oct 01, Volume 19, Issue 10, p.6264-6270, (2019)

Magnetically induced current density in triple-layered beryllium-boron clusters., Đorđević, Slađana, and Radenković Slavko , Phys Chem Chem Phys, 2019 Mar 27, Volume 21, Issue 13, p.7105-7114, (2019)

Strengthening Mechanism of Titanium Boride Whisker-Reinforced Ti-6Al-4V Alloy Matrix Composites with the TiB Orientation Perpendicular to the Loading Direction., Kurita, Hiroki, Suzuki Shiori, Kikuchi Shoichi, Yodoshi Noriharu, Gourdet Sophie, and Narita Fumio , Materials (Basel), 2019 Jul 28, Volume 12, Issue 15, (2019)

Novel structures of two-dimensional tungsten boride and their superconductivity., Yan, Luo, Bo Tao, Zhang Wenxue, Liu Peng-Fei, Lu Zhansheng, Xiao Yong-Guang, Tang Ming-Hua, and Wang Bao-Tian , Phys Chem Chem Phys, 2019 Jul 17, Volume 21, Issue 28, p.15327-15338, (2019)

Lanthanides with Unusually Low Oxidation States in the PrB and PrB Boride Clusters., Chen, Xin, Chen Teng-Teng, Li Wan-Lu, Lu Jun-Bo, Zhao Li-Juan, Jian Tian, Hu Han-Shi, Wang Lai-Sheng, and Li Jun , Inorg Chem, 2019 Jan 07, Volume 58, Issue 1, p.411-418, (2019)

Highly Flexible Hydrogen Boride Monolayers as Potassium-Ion Battery Anodes for Wearable Electronics., Xiang, Pan, Chen Xianfei, Xiao Beibei, and Wang Zhiming M. , ACS Appl Mater Interfaces, 2019 Feb 27, Volume 11, Issue 8, p.8115-8125, (2019)

Amorphous metal boride as a novel platform for acetylcholinesterase biosensor development and detection of organophosphate pesticides., Lu, Xiong, Li Yanshan, Tao Lu, Song Dandan, Wang Yuanzhe, Li Yan, and Gao Faming , Nanotechnology, 2019 Feb 01, Volume 30, Issue 5, p.055501, (2019)

Redox Tuning in Crystalline and Electronic Structure of Bimetal-Organic Frameworks Derived Cobalt/Nickel Boride/Sulfide for Boosted Faradaic Capacitance., Wang, Qingyong, Luo Yumei, Hou Ruizuo, Zaman Shahid, Qi Kai, Liu Hongfang, Park Ho Seok, and Xia Bao Yu , Adv Mater, 2019 Dec, Volume 31, Issue 51, p.e1905744, (2019)

Interfacial Engineering of Nickel Boride/Metaborate and Its Effect on High Energy Density Asymmetric Supercapacitors., Chen, Yuanzhen, Zhou Tengfei, Li Lei, Pang Wei Kong, He Xingmin, Liu Yong-Ning, and Guo Zaiping , ACS Nano, 2019 Aug 27, Volume 13, Issue 8, p.9376-9385, (2019)

Synthesis and High-Pressure Mechanical Properties of Superhard Rhenium/Tungsten Diboride Nanocrystals., Lei, Jialin, Hu Shanlin, Turner Christopher L., Zeng Keyu, Yeung Michael T., Yan Jinyuan, Kaner Richard B., and Tolbert Sarah H. , ACS Nano, 2019 Aug 19, (2019)

Non-trivial surface states of samarium hexaboride at the (111) surface., Ohtsubo, Yoshiyuki, Yamashita Yuki, Hagiwara Kenta, Ideta Shin-Ichiro, Tanaka Kiyohisa, Yukawa Ryu, Horiba Koji, Kumigashira Hiroshi, Miyamoto Koji, Okuda Taichi, et al. , Nat Commun, 2019 05 24, Volume 10, Issue 1, p.2298, (2019)

Discovery of hexagonal ternary phase TiInB and its evolution to layered boride TiB., Wang, Junjie, Ye Tian-Nan, Gong Yutong, Wu Jiazhen, Miao Nanxi, Tada Tomofumi, and Hosono Hideo , Nat Commun, 2019 05 23, Volume 10, Issue 1, p.2284, (2019)

Coupling of Methane and Carbon Dioxide Mediated by Diatomic Copper Boride Cations., Chen, Qiang, Zhao Yan-Xia, Jiang Li-Xue, Chen Jiao-Jiao, and He Sheng-Gui , Angew Chem Int Ed Engl, 2018 Oct 22, Volume 57, Issue 43, p.14134-14138, (2018)

Unexpected stable phases of tungsten borides., Zhao, Changming, Duan Yifeng, Gao Jie, Liu Wenjie, Dong Haiming, Dong Huafeng, Zhang Dekun, and Oganov Artem R. , Phys Chem Chem Phys, 2018 Oct 03, Volume 20, Issue 38, p.24665-24670, (2018)

Group-VIII transition metal boride as promising hydrogen evolution reaction catalysts., Wei, Guang-Feng, Zhang Ling-Ran, and Liu Zhi-Pan , Phys Chem Chem Phys, 2018 Nov 14, Volume 20, Issue 44, p.27752-27757, (2018)